Firefox Community Forum

No bookmarks, says in use by another application. Tried all troubleshooting ideas Can't change name or delete places or favicons - again says in use by another application. Disabled all add-on security.

I opened my computer several days ago. Firefox updated itself sometime recently while my laptop was closed. Once I opened it, it made me create a profile to continue. Now ALL of my history is deleted. All of my windows and tabs are gone. There is no history beyond the profile it made me create to continue using it. Is there any way to get back the previous history? This is about enough to make me give up on firefox completely.

Hi,

Following downloading update version 146, I have been unable to open Firefox, all that happens is that a box appears stating (see images): firefox.exe - Bad image, then C:\Program Files\Mozilla Firefox\xul.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support. Error status 0xc000000d.

After clicking OK on that box another one pops up stating:

Couldn't load XPCOM.

I have tried doing a Windows system restore, to try to take it back before it downloaded version 146, but this hasn't worked.

I've looked online and followed the advice there to download Firefox from your website, but that failed, just generating the XPCOM error.

My MAIN CONCERN at this point is that I do not want to lose all the bookmarks I had saved on my Firefox! I can't see any file within those in the Program Files\Mozilla Firefox folder, so is there any other way to save\recover them?

I don't have any original "installation media" so as far as I can remeber Firefox was pre-installed on my PC?

I have a Samsung PC running Windows 10. There are two Mozilla Firefox folder under my C:\:

C:\Program Files\Mozilla Firefox and C:\Program Files (x86)\Mozilla Firefox, under this folder the version is 146.0.0.383, but under the other folder it's version 145.0.2.579?

Please advise as to how to save my bookmarks and rectify this error.

Thank you in advance.

Robert

I was using my computer normally until I noticed one of my applications had an error. I could not close the error message the normal way, so I decided it would be a good idea to hit the "end task" on the error message, which caused a blue screen error. "No worries," I thought, "I'll be able to get back to where I was right after my computer restarts." Oh, how wrong I was. Upon logging in to my computer, Firefox opened to... the screen I got when i first installed it? As it turns out, the Mozilla folder in my AppData folder was completely erased, along with all its contents. Is there a way to get my data back?

I opened a profile that I had just used recently to a blank tab bar. I closed it and the sessionstore-backup folder did not have a recent backup, The most recent about a week old.

Just for testing, I tried to restore with one of the upgrade.jsonlz4 file, about 2 weeks old, but it also had no session. I then restored one that was 2 months old. That one had a session

Now, Firefox no longer generates the upgrade.jsonlz4 files

I recently got kicked off wifi right as I was opening Firefox and it deleted the website data of ALL my tabs. I had loads of design references in this window. How do I recover? Screenshot attached. All that blank space is open tabs with no web adress at all. clicking on it converts it to a 'new tab'. Am I screwed?

The last time Firefox updated I lost all my bookmarks. Tried using the restore tool and it didn't work. Tried restoring from my USB drive, didn't work either. Can you PLEASE help??